Internal-combustion engine.



PATBNTBD APR. 28,1908.

G. l. MUJNDHBNK NTERNAL GOMBUSTION ENGINE.

APPLICATION FILED JULYQ, 1907.

- vder and is WVM Cfi e Wirren@ l l Nn il@ in l,

NTERNL-COEUSTXGN ENGINE Specification o 'Letters atent.

Patented April 2S, 3.908.

Application filed LTuly 9, 1997. Serial No. 38.25%.

To @ZZ-:idiom it may concern: j

Be it known that l, ilnnnLns J. MUND- HENK, a citizen of the United States7 and a resident oi Freeport, in Jthe county ol? Ste-- phenson and State oi' l-llinoisdiave invented new and Improved lnternalflonibus ion llln gine', of which the following is a lull, clear, and exact description.

This invention relates to certain improvements in internal combustion engines, sind more particularly to improvements in' thL cylinder and cylinder head construction whereby the cylinder may be incre efficiently and uniformly cooled7 the means for distributing thc cooling` agent being so disposed as to aid in thevsupport of the cylinder and strengthen the saine. l

The invention consists in certain Ylectures of construction andy combinations oi parte, all of which will be fully serJ forth hereinafter and particularly pointed out in the claims.

Reference is to he had to ing drawings, forming a part ci this spelihcation in which similar characters oi reference indicate corresponding parts in both the figures, and in which Figure `l is a centraal longitudinal through a portion of on engine constructed in i accor ance with my invention; and Fig. Z is a transverse section on the line :3*2 oi Fig. l.

The cylinder'and jacket employed in connection with the improvements hereina'lter claimed are similar in many particulars to the construction disclosed in my p 'ici' patent No. 865,202, granted September 3, 1907. The cylinder 10 is formed integral witlithe cylinder head'll, and both are lformed ol' as thin material as is possible to employ while maintaining the required rigidity and strened i. A jacket l2 surrounds the body of the cytlinrovided with a head 3.3 spaced from the. c nder head ll and prererably integral witi the main body ol the jacket.-

lhe cylinder and jacket, as well as the cylinder head and jacket head, are so constructed Ias to facilitate the uniform distribution o the cooling medium admitted to the jacket, and this distributing means also serves to brace and strengthen the cylinder and reinforce the same, whereby the jacket receives a portion of the strain on the cylinder. The inain body of the cylinder is provided with ein cumferential leffres 14 extend-ing from adjacent the cylinder cad ll to a point spaced a the acconipanyi l l l l i l l i l l l l l l short distance fronithe lower end ci the cylinder. The jacket is provided with longitudinall e lilly less than the length. oi the cylinder and terniinatiiig adjacent the last ci the annular llanges 14. at the lower end of the oylinder. rl`lie-lfingitudinfd 'llanges of the jacket engage with the outer edges of the circumierentisl flanges ci the cylinder7 and thus serve es braces, whereby the cylinder is lstrcngthered and reinforced by the jacket'. it the saine time the llangcs constitute partitions which forni with the cylinder and jacket a plurality of passageways. At the lower end oi the cylinder l provide an annular flange lo which extends from the cylinder to the jacket and 'iirrnly braces thc lower end of the cylinder and completely closes the space therebetween. The jacket is provided with a plurality oi large openings 17 upon one or more sides there-ei" and between the ends of the flanges l5 and the flange 16, whereby an annuler chamber 18 is formed which is closed at its lower end and continunicstes at its upper end with the vspace be- Uweon the longitudinal flanges l5.

it the opposite end of the structure, each oi the flanges or partitions l5 extends partially across the cylinder hea-d an l iiri'nly engages with sai'd cylinder head to brace the latter against the jacket head, The flanges here extend radially and ell terminate at a short distance from the center of the cylinder heed, thus leaving a chamber i9 communicating with the radially-extending passages between said l'langes. Secured tothe jacket head i3 or integral 'therewith l provid coupling 2O communicating with vthe chain bei i9 t irough an opening in the jacket head? and having a conduit 2l connected thereto for the delivery ol' the cooling incdiuin.

For additionally bracing the cylinder head and jscket head, and for permitting the ad lli f s, l provide tubes 22 screw-threaded to the cylinder head at their inner ends and screwthreaded to the jacket head intermediatev lor the delivery of the iuel supply and the conducting away of the exhaust gas. The

valves are operated by suitable valve stems 2d, wnich extend out through the ends oi the ,Ldisposed radial llangcs .l5 ot a length' nnssioirand escapo of the fuel end exhaust ico tubes, and pivotally mounted between lugs i nicating with. the

24 carried by the coupling 20 is a lever arni j f into engagement with the cylinder head ad- 25 for en aging with rollers upon the outer ends of tie valve rods 23 for opening and closing the valves at the desired tiine. As illustrated, only a single lever arni is ernployed, and this arn'i is operated by a single connecting rod 26, although it is evident that the valves may be operated independently and various mechanism inay be employed l'or opening and closing theni at the desired tinies in the cycle of operation. Also extending troni the jacket head to the cylinder head and referably rigidly connected to both, is a spark plug 27 and a conduit 28 carrying the pet cock. .Both of these also serve to rigidly s ace the cylinder head and-jacket head at tile desired distance apart.

In the operation of iny improved engine, air or other suitable cooling niediuni is supplied through the conduit 2l and coupling 20 to the chamber 19, from which it passes out through the radial passages to the outer edge ofthe cylinder head and then passes longitudinally ofthe cylinder between the flanges 15 into the annular chamber 1&5, troni whichit may esca ie through the openings l?, For additionally cooling the cylinder l inay,it desired, provide radiating strips 29 on the cylinder wall and extending outward inip the longitudinal passages between the llanges l5. The body of the cylinder is cooled by the an. nular llanges 14 and the longitudinal strips 29, and the radial disposition ol the Ylianges intermediate the cylinder head and acket head causes a thorough and unil'orni distribution of the air.

lf desired, an additional exhaust port 30 may be provided so disposed as to be uncovered by the piston at the end of its stroke.

Having thus described niy invention, l claini as new and desire to secure by Letters Patent:

l. An internal conibustio'n engine, including a cylinder having a cylinder head, a jacket having a jacket head, partitions between the cylinder and jacket i'oli'ni ng longitudinally-extending passages, partitions integral with the lirst-nientioned partitions and disposed between said cylinder head and vsaid jacket head l'orniing radiallyalisposed passages c oniinunicating with the vfirst-nientioned. passages, and incans l'or delivering a cooling niediuni into engagement with the cylinder head adjacent the center thereol', whereby itniay flow through said radial and longitudinally-disposed passages.

2. In an internal combustion engine, a cyl inder having a cylinder. head a jacket having a jacket head, ilanges between the cylinder and jacket and lorniing longitinlinally-extending passages, ilangesintegral with the 1lirsteinentioned flanges and extending between said cylinder head and jacket head and foi-nung radially-disposed passages 'coniniust-mentioned passages, and ineans tor delivering a cooling niediuni jacent the inner end oi each el said radiallydisposcd passages. v 0

3. in an internal con'ibustion engine, a cylinder having a cylinder head, acaeti ,Wing a jacket head, lllangnis carried ny sa' f jacket and jacket lie-ad and extending int-o engageincnt with said cylinder and cylinder head, each oli said ilanges ..iaving one enjl icreel adjacent the center oi' the 'inde head and the other vend thereof adjacent t Y L. 'te end of the cylinder, said tlanges l'orniing ra dially-disposed and long itudinallv-ektendin passages, and ineens for delivering a cooling medium adjacent one end ot each ol said. passages.V

ll. ln an internal coinbustifni engine, a cylinder having a cylinder head, a jaekethaying a jacket head, and ineens for delivering cooling niediuin through s al jacket head and into engageniinit with the cylinder head adjacent the center of the latter, the eylind and jacket being constructed. to torni ra dially 9@ disposed passages extending frein the center of the cylinder head to the edges thereof and .longitudinally-extending passages along said cylinder, and said jacket being provided with an opening l'or the escape ot' the cooling niediuin adjacent the end of the cylinder oppon site to said cylinder head.

5. .ln an internal combustion engine, a cylu inder having a cylinder head, a jacket having a jacket head, an. annular llange closing the ne space between said jacket and cylinder ad jacent the end opposite to said heads, a pluH rality et' longituilinally-eitending passages between said cylinder and jacket and. tern'ii na'ting a short distance from said annular lia ge, means lor deliveriiig a cooiing inediuni through the jacket head into A nient with the cylinder head. adjacent the center thereof, and nieans for uiiiloi'i "y distributing said cooling niediuni to the .l longitudinally-extcnd inir passages.

(5. ln an internal tainibustion engine, a cylindei' head, a jacket head, radially-disposed [langes carried by one and in iirn'i engage nient with the other, for bracing and reinl'oreing the saine and forniin adial passages, nieans lor delivering a. cooling inediuin. through the jacket head into r-ngagenieiit with the cylinder-head, whereby it may iiow outwardly through the radial passages bei2@ tw :en said radial flanges, and a plurality et tubes rigidly secured to said cylinder head and said jacket head and also serving to reinl'orce andv brace the cylinder.

7. fin an internal combustion engine inder head, a jacket head, radially posed Vllanges carried by one and in iirni eng nient with the other lor bracing WH" forcing t ie saine and forming rad nieans l through the jacke-'L head into egagementn testimony whereof I have signed my with the v w'lindel head, whereby it may HOW name to this specification in the prsence of outwardly through the radial passages betwusubscyibing Witnesses.

when said radial firing/ss, and inlet and out! CEAS. J. MUNDHENK.

hai wnduits rigidly secured to the cyhndex' Witnesses hmm] und the jacket head,o1 cnveyng the W. N. CRONKRITEl mmv@ ihuds to and from the cyhnder. C. B. CO'URTNEY. 

